Regenerative gas-lam p



(N Model.) f

,0.L. BELL. n REGBNLRATIVBGAS LAMP:`

` I Patented API'- 17 Y .t

Il r FIGQ N. PETERS Phnxu-Lnmgnphu. washington, DAC.'

SPECIFICATION forming part olfLetteI REGENERATNE AGAS-LAM P.

iPatenrgNo. 381,205, dateaapru 17` 188s.

- Application filed October 1,-188'7. slerialmNro. 251,185. '(No modell' To @ZZ 'whaha it 71mg concern.-

Be it known that I, CHARLES E. BELL, a citizen of the' United States of America, residing at Greeniield,in the county fHighland and Stateof Ohio,fhave invented certainA new and useful Improvements in Regenerative Gas- Lamps, of which the following is a specification, reference being had therein to theaccompanying drawings.

This invention comprises certainl improvements 1n the peculiar form of regenerative gas-lamp seen in Letters Patent No. 367,949,

Y and 5 are axial 'sections of two different modi` j l or it may consist of a series of small holesfquite granted to. me August 9,;1887, the details* of y the present improvementsbeing hereinafter more-fully described, and then pointed out in the claim.`

In .the annexed drawingsFigure 1 is an' axial section `of a regenerative'gas-lamp embodying my improvements.. Fig. 2 is an en-I larged axial section of thelamp-nozzle and its accessories. Fig. 3 is a horizontal section of the air-tubes, takenat the line a z. Figs. 4.

chamber isseparated from said jacket by a top plate, into whichl pipeA is screwed, and

-the jacket has a vseries o f apertures, d, at bot? tom and similar openings, d', at or nearits u'p-y perend, for a purpose that will presently appear. y

Screwed intov the bottom of chamber C is the secondary gas-pipe, E, carrying a nut or col'- lar, e, that maintains the dame' spreader or deflector F in contact with said chamber. yThis ydetlector is made of any clay, earth, or other material or composition of materialscapable of being brought into aplastic condition, and

then molded tothe desired shape before being baked or burned in the saine manner as ordinary pottery or ceramic Ware. Furthermore,

.care must be taken in the selectionof materiT als to use only such clay or earth as will insure a very light-colored plate or disk, pure that tlieveonstruction of the llame-spreader may UNITEDISTATES-rlTENT-;@may

' CHARLES E. j BELL, or GHEENEIELD, OHIO, Assia-Noa or ONE HALE 'ro j `*envi/inap LivreoLAmoF SAME PLACE.' e

white being preferred for obvious reasons. As

be variedto suit'eircuinstances.` jffis a cen-A Q trai` aperture in'said disk to permit the passage of the gaspipe E, as more clearly seen-inFig. 2.

lThelowerend ofsecondary gas-pipeE carries acoupling, G, to whichadripcup,H,isscrewed,1l

the object of said cup being to collectianytime"I pu ritiesn or sediment that may fall downwithin sa'idpipe., v v 4 g g represent a series of branchk pipes, pro# ing upto the nozzle Lwhich' nozzle hastav Vscrew-threaded neck, that engages 'withan internal thread, j, at the top ofthe central'airtube, J. Nozzle I *has an annular receivingchamber, K, into which the gas is conducted beforcescaping at the jet-oriticec, which'lat' ter may be simply a very narrow annularslot, Y

close together. j, f r l j "L is the outer airtube, having aseries ofradial arms,vm,.united to a ring, M, which latter is a nut engaging with the external thread, j', y

of the central air-tube, J The upper end of? tube L'is contracted Aat-Z, for a'lpurposei that willvpresently appear. Applied to this outer tube isa support, N, perforated at a and carrying the glass globe Orwhose top is/pclosed by a cap, P, `attached to the casing D.

i The operation of myimproved klannp is `as follows: Cock B isflrst openedto allowthe vgas or illuminating lvapor to flow throughthe main pipe kA and iillthe chamber-C, fromr whence it escapes down the secondarypipe E into the branches g g. These branches conduct the gas tothe receiving-chamber K,f and e as/soon as the latter is lled the vapor escapes therefromthrough the jet-orifices lc, and is at oncefignitcdby means yof a light or otherwise, Assoon as the gas beginsfkto burn, a `'draftris created up the air tubes J L, the current from the Vinner tube, J, escaping throughthe nozzle I, While the current from the outer tube,ll

L, escapesthrough the contracted endlof the Isame. Consequently -the two currents. of -`air 6s i Y ceeding laterally from thecoupling G and slopmingle with the flames at the orifice 7s, thereby producing a perfect combustion of the gas and atfording a very clear and brilliantlight, which is intensified by reflection from the White delector F. This detlector spreads the flames and soon becomes very highly heated, which heat is transmitted directly to chamber C. Therefore the gas in this chamber is highly heated on its way to the secondary gas-pipe E, while the main gas-pipe A is heated by the vapors that pass through thev openings d and traverse the casing D,the vapors finally escaping from said casing through the upper perforations, d. While the lamp is thus operating the currents of air entering at th'e openings a of the support N keep the globe O sufiiciently cool to prevent it cracking.

In the moditication of my invention seen in Fig. 4 the under side ot the deflector. has a central circular socket, f, to admit the upper end of a ceramic cylinder, R, adapted to surround the secondary gastube E and to rest upon the coupling G of the same, as represented in Fig. 2; but in this last illustration the socket is omitted, and the disk F rests directly upon the top of said cylinder R. Another change is seen in Fig. 5, wherein the cylinder is integral with the disk'or deflector.

By thus enveloping the secondary gas-tube within a ceramic cylinder the exposed portion of the llatter serves to rellect light from the lamp., it being understood that. said cylinder is perfectly white, or as near that color as can be obtained. This ceramic cylinder and the ceramic deflector preserve their light color for an indefinite length of time, and never tarnish nor become black with soot and other deposits, as do the ordinary metallic deiectors used in lamps of this character.

I claim as my invention- The combination, in a regenerative gaslamp, ,of inner air-tube, J, screw-threaded at j j', a screw-threaded nozzle, I K k, engaged with the thread j ,agas-tube,E,havingbrauches g, connecting with said nozzle, and an outer air-tube, L, having a contracted upper end, Z, and a series of arms, m, provided with a nut, M, that engages with the thread j' of said inner air-tube, as herein described.

In testimony whereof I alix my signature in presence of two witnesses.

CHARLES E. BELL.

Witnesses: P. K. DAVIS,

A. M. MACKEELEY. 

